EN
This paper loosely follows the article „Leniency Program and effective regret“ by the author published in Právny obzor 1/2012, which is dealing with leniency and effective regret under the provisions of the Criminal Code in general. The author addresses the partial issue in this paper, and thus completes the complex relationship of restricting competition, leniency program and the effective regret and their relationship to the concentration in the form of a joint venture.